Re: [OpenSIPS-Users] wait_for_event(event,filter,timeout)
On 26.08.2020 15:24, Vitaliy Aleksandrov wrote: Your suggestion with async(sleep(), resume) is really cool. Hey, Vitaliy! I know, right? All programming textbooks say: "sleep() is bad", "Avoid synchronizing with sleep()", "sleep() is hackish", etc. But, for this use case, async(sleep()) helps you achieve this zero-cost polling loop, which almost feels like magic! To me, it looks like the ideal solution. Also, for more precision, you can use async(usleep()). -- Liviu Chircu www.twitter.com/liviuchircu | www.opensips-solutions.com OpenSIPS Summit 2020 Distributed www.opensips.org/events/Summit-2020Distributed ___ Users mailing list Users@lists.opensips.org http://lists.opensips.org/cgi-bin/mailman/listinfo/users
Re: [OpenSIPS-Users] wait_for_event(event,filter,timeout)
Hi Liviu, Your suggestion with async(sleep(), resume) is really cool. I use async(wait_for_event(), resume) a bit differently and pause a call for another type of event that is generated upon reception of an external notification (SIP or clusterer) and had to patch event_routing, add a timer and forcibly call "resume" route when it expires. But even my use case can be rewritten by setting some global flag or cache_srote() from an event handler and checking it from resume route. I completely forgot that haven't sent that patch for review. On 20.08.2020 09:37, Darpan Patel wrote: But in my case after 40 seconds it's not trigger resume_call route, so resume_call only called after the event will succeed ? I want to implement a feature like if callee is not registered till 40 seconds then relay call to PSTN Gateway .thanks alot in advance . regards , Darpan Patel Hey Darpan, From how I recall the code, async() statements have no timeout. So that async(wait_for_event()) will be stuck forever until that registration arrives -- I may be wrong here, maybe Bogdan can offer more clarifications as he delivered some work on supporting async statement timeouts roughly 6 months ago. Alternatively, I suggest a simpler solution, which will actually be quite performant: "as long as the lookup() keeps failing due the user still being offline, keep doing async(sleep(1 second), route_lookup_user). Start with an $avp() value of 40 and keep decrementing it, so you know when to give up doing those sleep() operations, after 40 decrements (seconds)." Reasons why this close to optimal: * usrloc lookup() operations are hyper-optimized, since all AoRs are held in an AVL tree which sits in a wide hash. The lookup cost is essentially zero. * async(sleep()) is safe & straight-forward. It will also help you maintain a high throughput (thousands of CPS) * the user experience will be quite OK, with the caller receiving the call 1 second after the registration, on the worst case Best regards, -- Liviu Chircu www.twitter.com/liviuchircu |www.opensips-solutions.com OpenSIPS Summit 2020 Distributed www.opensips.org/events/Summit-2020Distributed ___ Users mailing list Users@lists.opensips.org http://lists.opensips.org/cgi-bin/mailman/listinfo/users ___ Users mailing list Users@lists.opensips.org http://lists.opensips.org/cgi-bin/mailman/listinfo/users
Re: [OpenSIPS-Users] wait_for_event(event,filter,timeout)
On 20.08.2020 09:37, Darpan Patel wrote: But in my case after 40 seconds it's not trigger resume_call route, so resume_call only called after the event will succeed ? I want to implement a feature like if callee is not registered till 40 seconds then relay call to PSTN Gateway .thanks alot in advance . regards , Darpan Patel Hey Darpan, From how I recall the code, async() statements have no timeout. So that async(wait_for_event()) will be stuck forever until that registration arrives -- I may be wrong here, maybe Bogdan can offer more clarifications as he delivered some work on supporting async statement timeouts roughly 6 months ago. Alternatively, I suggest a simpler solution, which will actually be quite performant: "as long as the lookup() keeps failing due the user still being offline, keep doing async(sleep(1 second), route_lookup_user). Start with an $avp() value of 40 and keep decrementing it, so you know when to give up doing those sleep() operations, after 40 decrements (seconds)." Reasons why this close to optimal: * usrloc lookup() operations are hyper-optimized, since all AoRs are held in an AVL tree which sits in a wide hash. The lookup cost is essentially zero. * async(sleep()) is safe & straight-forward. It will also help you maintain a high throughput (thousands of CPS) * the user experience will be quite OK, with the caller receiving the call 1 second after the registration, on the worst case Best regards, -- Liviu Chircu www.twitter.com/liviuchircu | www.opensips-solutions.com OpenSIPS Summit 2020 Distributed www.opensips.org/events/Summit-2020Distributed ___ Users mailing list Users@lists.opensips.org http://lists.opensips.org/cgi-bin/mailman/listinfo/users
Re: [OpenSIPS-Users] wait_for_event(event,filter,timeout)
More or less the same problem here.
I need to trigger on receiving a register after a push notification, I do
see the REGISTER arriving but nothing happens.
I use 3.1. Might it be that we have a module issue ?
Op do 20 aug. 2020 om 08:41 schreef Darpan Patel <
darpan.gabani1...@gmail.com>:
> Hello All , i have a query regarding wait_for_event functionality .In
> documentation usage of event is like this :
>
> # wait for callee to register
> $avp(filter) = "aor="+$rU+"@"+$rd
> async( wait_for_event("E_UL_AOR_INSERT","$avp(filter)", "40"), resume_call);
> # done
> ...
> route[resume_call] {
> xlog("user $avp(aor) is now registered\n");
> lookup("location");
> t_relay();
> }
>
> But in my case after 40 seconds it's not trigger resume_call route, so
> resume_call only called after the event will succeed ? I want to implement a
> feature like if callee is not registered till 40 seconds then relay call to
> PSTN Gateway .thanks alot in advance .
>
> regards ,
>
> Darpan Patel
>
> ___
> Users mailing list
> Users@lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>
___
Users mailing list
Users@lists.opensips.org
http://lists.opensips.org/cgi-bin/mailman/listinfo/users
[OpenSIPS-Users] wait_for_event(event,filter,timeout)
Hello All , i have a query regarding wait_for_event functionality .In
documentation usage of event is like this :
# wait for callee to register
$avp(filter) = "aor="+$rU+"@"+$rd
async( wait_for_event("E_UL_AOR_INSERT","$avp(filter)", "40"), resume_call);
# done
...
route[resume_call] {
xlog("user $avp(aor) is now registered\n");
lookup("location");
t_relay();
}
But in my case after 40 seconds it's not trigger resume_call route, so
resume_call only called after the event will succeed ? I want to
implement a feature like if callee is not registered till 40 seconds
then relay call to PSTN Gateway .thanks alot in advance .
regards ,
Darpan Patel
___
Users mailing list
Users@lists.opensips.org
http://lists.opensips.org/cgi-bin/mailman/listinfo/users
